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Gentoo: GNU Radius Format string vulnerability Print E-mail
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Posted by Benjamin D. Thomas   
Gentoo A format string vulnerabilty has been found in GNU Radius, which could lead to the remote execution of arbitrary code.
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Gentoo Linux Security Advisory                           GLSA 200612-17
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                                            http://security.gentoo.org/
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  Severity: High
     Title: GNU Radius: Format string vulnerability
      Date: December 14, 2006
      Bugs: #156376
        ID: 200612-17

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Synopsis
========

A format string vulnerabilty has been found in GNU Radius, which could
lead to the remote execution of arbitrary code.

Background
==========

GNU Radius is a GNU version of Radius, a server for remote user
authentication and accounting.

Affected packages
=================

    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  net-dialup/gnuradius        < 1.4                          >= 1.4

Description
===========

A format string vulnerability was found in the sqllog function from the
SQL accounting code for radiusd. That function is only used if one or
more of the "postgresql", "mysql" or "odbc" USE flags are enabled,
which is not the default, except for the "server" 2006.1 and 2007.0
profiles which enable the "mysql" USE flag.

Impact
======

An unauthenticated remote attacker could execute arbitrary code with
the privileges of the user running radiusd, which may be the root user.
It is important to note that there is no default GNU Radius user for
Gentoo systems because no init script is provided with the package.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU Radius users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dialup/gnuradius-1.4"

References
==========

  [ 1 ] CVE-2006-4181
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4181

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200612-17.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5
 
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